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"Suvarnabhasm", an ayurvedic drug, is f...

"Suvarnabhasm", an ayurvedic drug, is found to contain `400 "ppm"` of colloidal gold. Mass `%` of gold `("atomic mass of Au" = 197)` will be :

A

`0.040 %`

B

`7.88 %`

C

`0.0788 %`

D

`4xx10^(-4) %`

Text Solution

Verified by Experts

The correct Answer is:
A
` pp m = ("moles of solute")/("mass of solution")xx10^(6)`
`(400)/(100)xx100=("moles of solute")/("mass of solution")xx100`
Mass `%=0.04`
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